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Genetics Test Review

chromosomes thread-like structures inside the nucleus of each cell that contain genetic material
gene a section on a chromosome that has genetic information for one trait two of these are contained in each chromosome pair
allele different forms or varieties of a gene
trait a genetic factor of a living thing examples of this include eye color, seed shape, attached or unattached ear lobes, curly hair, seed shape, flower color
phenotype how a trait is expressed or appears
genotype the 2 alleles that control the phenotype of a trait
dominant upper case letters represent this type of trait
recessive lower case letters represent this type of trait
homozygous when two alleles of a gene are the same
heterozygous when two alleles of a gene are different
Created by: Land3n